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AT4

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ID = 13788
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   UHF 
Identical to AT4 = A40_Mazda = NR50 = CV1171

Base Acorn 5 pin 5AA
Filament Vf 4 Volts / If 0.25 Ampere
Information source Taschenbuch zum Röhren-Codex 1948/49   

at4_sock.png AT4: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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Just Qvigstad
at4_techdat01.png
AT4: Mullard Valves 1936
Peter Hoddow

 

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